Developer Tools
Utilities for developers, all running client-side in your browser.
JSON Formatter
Format, validate, and beautify JSON data instantly.
Base64 Encoder
Encode text to Base64 or decode Base64 back to plain text.
URL Encoder & Decoder
Encode text for safe use in a URL, or decode it back.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
XML Formatter
Format, validate, and minify XML with clear error messages.
CSS Minifier & Beautifier
Clean up messy CSS or shrink it down for production.
JavaScript Minifier & Beautifier
Clean up or shrink JavaScript, safely handling strings and comments.
Markdown to HTML Converter
Convert Markdown into HTML, or HTML back into Markdown.
JWT Decoder
Decode a JSON Web Token and inspect its header and payload.
Cron Expression Builder
Build a cron expression, or parse one into plain English.
Timestamp Converter
Convert a Unix timestamp into a date, or a date into a timestamp.
Regex Tester
Test a regular expression with live highlighting and capture groups.
HTML Encoder & Decoder
Convert special characters into HTML entities, or decode them back.
CSV to JSON Converter
Convert CSV data into JSON, or JSON back into CSV.
Code Diff Checker
Compare two versions of code side by side with line numbers.
Text Encryption & Decryption
Encrypt or decrypt text using Caesar, Vigenère, or XOR ciphers.